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14 Cards in this Set
- Front
- Back
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Somatic Cell |
Any cell in a multi-cellular organism except a sperm or egg cell. |
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Karyotype |
A display of the chromosome pairs of a cell arranged by size and shape. |
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Homologous Chromosomes |
Chromosome pairs of the same length, centromere position, and staining pattern that possess alleles of the same genes at corresponding loci. One homologous chromosome is inherited from the organisms father, the other from the mother. |
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Sex Chromosomes |
One of the pair of chromosomes responsible for determining the sex of the individual. |
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Autosomes |
A chromosome that is not directly involved in determining sex, as opposed to a sex chromosome. |
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Diploid Cells |
A cell containing two sets of chromosomes (2n), one set inherited from each parent. |
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Haploid Cells |
A cell containing only one set of chromosomes (n). |
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Fertilization |
The union of haploid gametes to produce a diploid zygote. |
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Zygote |
The diploid product of the union of haploid gametes in conception; a fertilized egg. |
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Meiosis |
A two-stage type of cell division in sexually reproducing organisms that results in cells with half the chromosome number of the original cell. |
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Alternation of Generations |
A life cycle in which there is both a multicellular diploid form, the sporophyte, and a multicellular haploid form, the gametophyte; characteristic of plants and some algae. |
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Sporophyte |
In organisms undergoing alternation of generations, the multicellular diploid form that results from a union of gametes and that meiotically produces haploid spores that grow into gametophyte generation. |
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Spores |
The life cycle of a plant or alga undergoing alternation of generations, a meiotically produced haploid cell that divides meiotically, generating a multicellular individual, the gametophyte, without using another cell. |
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Gametophyte |
A limited gene library using complementary DNA. The library includes only the genes that were transcribed in the cells examined. |
